Check if next id is not bigger than UINT_MAX.

--HG--
branch : develop

src/libs/vpatterndb/vcontainer.cpp

@@ -197,6 +197,13 @@ quint32 VContainer::getId()
  */
 quint32 VContainer::getNextId()
 {
+    //TODO. Current count of ids are very big and allow us save time before someone will reach its max value.
+    //Better way, of cource, is to seek free ids inside the set of values and reuse them.
+    //But for now better to keep it as it is now.
+    if (_id == UINT_MAX)
+    {
+        qCritical()<<(tr("Number of free id exhausted."));
+    }
     _id++;
     return _id;
 }